Figure 1 | Scientific Reports

Figure 1

From: Correlations between obstructive sleep apnea and adenotonsillar hypertrophy in children of different weight status

Figure 1

Measurement of the adenoidal/nasopharyngeal (A/N) ratio on lateral cephalometric radiographs. The distance A is measured along the line running perpendicular from the point of maximal convexity along the inferior margin of the adenoidal shadow to the point of intersection with line B. The nasopharyngeal space N is the distance between the posterior/superior edge of the hard palate and the anterior/inferior edge of the sphenobasioccipital synchondrosis. The A/N ratio is obtained by dividing A by N.

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